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Amino acids, proteins and DNA (A-level only)

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Question 5

Which compound is 3-amino-2-methylbutanoic acid?

A

CH3CH(NH2)CH(CH3)COOH\text{CH}_3\text{CH}(\text{NH}_2)\text{CH}(\text{CH}_3)\text{COOH}CH3​CH(NH2​)CH(CH3​)COOH

B

CH3CH2C(CH3)(NH2)COOH\text{CH}_3\text{CH}_2\text{C}(\text{CH}_3)(\text{NH}_2)\text{COOH}CH3​CH2​C(CH3​)(NH2​)COOH

C

H2NCH2CH(CH3)CH2COOH\text{H}_2\text{NCH}_2\text{CH}(\text{CH}_3)\text{CH}_2\text{COOH}H2​NCH2​CH(CH3​)CH2​COOH

D

CH3CH(NH2)CH2CH2COOH\text{CH}_3\text{CH}(\text{NH}_2)\text{CH}_2\text{CH}_2\text{COOH}CH3​CH(NH2​)CH2​CH2​COOH

Markscheme

Amino acids, proteins and DNA (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Amino acids, proteins and DNA (A-level only)

30 exam-style questions on AQA A Level Chemistry Amino acids, proteins and DNA (A-level only), covering Amino acids (A-level only), Proteins (A-level only), Enzymes (A-level only), DNA (A-level only), and Action of anticancer drugs (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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